Evolution studies show how birds and dinosaurs are close relative. However a question was still unsolved : How dinosaur scales became bird feathers???
Here is the answer :
http://www.bbc.com/news/science-environment-42082489
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From @cguib
Evolution studies show how birds and dinosaurs are close relative. However a question was still unsolved : How dinosaur scales became bird feathers???
Here is the answer :
http://www.bbc.com/news/science-environment-42082489